Top: result of the contrast optimization of PIAAN. The starting point is in orange, after Strehl optimization. The filled area shows the envelope covered by the six spaxels, each shown by a colored curve in the envelope. The end result is displayed in green, also with the curve of the six spaxels and the corresponding envelope in green. Bottom left: working point OPD applied on the DM. The yellow circle represents the 4 mm pupil size of the PIAA. Bottom right: resulting PSF at λ=633 nm.